package com.atguigu.gulimall.product.service.impl;

import com.atguigu.gulimall.product.entity.AttrEntity;
import com.atguigu.gulimall.product.service.AttrService;
import com.atguigu.gulimall.product.vo.AttrGroupWithAttrsVo;
import com.atguigu.gulimall.product.vo.SkuItemVo;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.atguigu.common.utils.PageUtils;
import com.atguigu.common.utils.Query;

import com.atguigu.gulimall.product.dao.AttrGroupDao;
import com.atguigu.gulimall.product.entity.AttrGroupEntity;
import com.atguigu.gulimall.product.service.AttrGroupService;
import org.springframework.util.StringUtils;


@Service("attrGroupService")
public class AttrGroupServiceImpl extends ServiceImpl<AttrGroupDao, AttrGroupEntity> implements AttrGroupService {

    @Autowired
    AttrService attrService;
    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<AttrGroupEntity> page = this.page(
                new Query<AttrGroupEntity>().getPage(params),
                new QueryWrapper<AttrGroupEntity>()
        );

        return new PageUtils(page);
    }

    @Override
    public PageUtils queryPage(Map<String, Object> params, Long catelogId) {
        // 拿到参数中的 key
        String key = (String) params.get("key");
        // 先根据分类id进行查询
        QueryWrapper<AttrGroupEntity> wrapper = new QueryWrapper<>();
        // 有时候查询也不会带上key 所以得判断
        if (!StringUtils.isEmpty(key)) {
            // where条件后加上 and
            wrapper.and((obj) -> {
                obj.eq("attr_group_id",key).or().like("attr_group_name",key);
            });
        }
        // 分类id 等于01 查询全部
        if (catelogId != 0) {
            wrapper.eq("catelog_id", catelogId);
        }
            IPage<AttrGroupEntity> page = this.page(new Query<AttrGroupEntity>().getPage(params),
                                                    wrapper);
            return new PageUtils(page);
    }

    /**
     * 根据分类id查出当前分类下的所有分组以及其中的属性，
     * @param catelogId
     * @return
     */
    @Override
    public List<AttrGroupWithAttrsVo> getAttrGroupWithAttrsByCatelogId(Long catelogId) {
        //1.查询分组信息
        List<AttrGroupEntity> attrGroupEntities = this.list(new QueryWrapper<AttrGroupEntity>()
                .eq("catelog_id",catelogId));
        //2. 查出分组属性
        List<AttrGroupWithAttrsVo> withAttrsVoList = attrGroupEntities.stream().map(attrGroupEntity -> {
            AttrGroupWithAttrsVo attrsVo = new AttrGroupWithAttrsVo();
            BeanUtils.copyProperties(attrGroupEntity, attrsVo);
            List<AttrEntity> attr = attrService.getRelationAttr(attrsVo.getAttrGroupId());
            attrsVo.setAttrs(attr);
            return attrsVo;
        }).collect(Collectors.toList());
        return withAttrsVoList;
    }

    @Override
    public List<SkuItemVo.SpuItemAttrGroupVo> getAttrGroupWithAttrsBySpuId(Long spuId, Long catalogId) {
        //1.查出当前spu对应的所有属性的分组信息以及当前分组下的所有属性对应的值
        AttrGroupDao baseMapper = this.getBaseMapper();
        List<SkuItemVo.SpuItemAttrGroupVo> vos = baseMapper.getAttrGroupWithAttrsBySpuId(spuId, catalogId);
        return vos;
    }


}